Published Mar 1, 2018 at 9:20 AM

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In this Feb. 7, 2004, file photo, William H.T. Bush, better known as "Bucky," brother of former president George H. W. Bush, is seen in St. Louis. Former Florida Gov. Jeb Bush confirmed Thursday in an email to The Associated Press that his uncle died Wednesday.

William H.T. "Bucky" Bush, a wealthy investor and the brother and uncle of presidents, has died. He was 79.

Former Florida Gov. Jeb Bush confirmed Thursday in an email to The Associated Press that his uncle died Wednesday. He did not describe the cause.

The brother of President George H.W. Bush and uncle of President George W. Bush was co-founder and chairman of Bush O'Donnell Investment Advisers in St. Louis, Missouri, and served on the board of directors of WellPoint Inc.

Known as "Bucky" Bush, he also active in Republican politics. When he chaired his nephew's presidential re-election campaign in Missouri, he said he used to babysit the 43rd President of the United States.

Chairman Todd Graves of the Missouri Republican Party offered his condolences to the Bush family, tweeting that "Bucky Bush was a strong leader and champion for the state of Missouri."